I'm looking at your post 14 hours you posted and the estimated rewards rewards as 16 POB. That's about 8 USD right now. The rewards come from others not from your stake when authoring. Vote up the best posts in the Proof of Brain community and look at your curation rewards after a week. This is when having POB stake helps. Suppose you powered down 120 HP. You could get 80 POB and then power that up. The market is really thin, so you will shift the sell price to well over one Hive each but I'm making 1% of my stake per day on a poor day. The delegated stake should get you another 8 POB a day for curation if you put in the 'work'.